JPS631356A - Synchronous motor timepiece - Google Patents

Synchronous motor timepiece

Info

Publication number
JPS631356A
JPS631356A JP14365986A JP14365986A JPS631356A JP S631356 A JPS631356 A JP S631356A JP 14365986 A JP14365986 A JP 14365986A JP 14365986 A JP14365986 A JP 14365986A JP S631356 A JPS631356 A JP S631356A
Authority
JP
Japan
Prior art keywords
rotor
stator
leg piece
magnetic pole
leg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14365986A
Other languages
Japanese (ja)
Inventor
Yosuke Hirooka
弘岡 洋介
Takeshi Hayakawa
剛 早川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seikosha KK
Original Assignee
Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seikosha KK filed Critical Seikosha KK
Priority to JP14365986A priority Critical patent/JPS631356A/en
Publication of JPS631356A publication Critical patent/JPS631356A/en
Pending legal-status Critical Current

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  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE:To increase a driving torque and reduce material and processing costs by making a U-shaped stator of a round bar material and forming an inwardly projecting magnetic pole in a portion corresponding to a stator magnetic pole opposed to a rotor. CONSTITUTION:A stator 1 is made of a round bar material consisting of high magnetic permeability material, formed by bending as a whole into an almost U-shaped body and furnished with two leg pieces 11, 12 and a coupling part 13 connecting said pieces. A coil 3 is wound round the leg piece 11 via a bobbin 2. A doglegged bent 12a is formed in a tip portion of the leg piece 12. A rotor 4 magnetized in two poles N, S is arranged within a space surrounded by a tip 121a of the leg piece 11 and the other leg piece 12a. At the tip portion 12a of the leg piece 12, inwardly projecting magnetic poles 12a, 12c are formed by extrusion with a press in a portion opposed in close vicinity to the rotor 4 and corresponding to a stator magnetic pole.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は時計用同期モータ特には時計用ステンブモータ
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a synchronous motor for a timepiece, and particularly to a stem motor for a timepiece.

(従来の技術) 従来技術において、例えば特開昭55−97173号お
よび特開昭57−50678号公報には、軟磁性材料で
作られた丸棒材をほぼコ字状に屈成し、一方の脚片の先
端部にくの字状の屈曲部が形成されているステータをも
つモータが示されている。
(Prior art) In the prior art, for example, Japanese Patent Laid-Open Nos. 55-97173 and 57-50678 disclose a method in which a round bar made of a soft magnetic material is bent into a substantially U-shape. A motor is shown that has a stator in which a dogleg-shaped bent portion is formed at the tip of each leg.

(発明が解決しようとする問題点) ステータの外周面が一様であるためロータと対向するス
テータの磁極部が他の磁極部に対して際立っていないの
で、大きい駆動トルクが得られない問題点がある。また
丸棒材で作られたステータでは、その断面形状が真円に
近いためロータと対向する磁極部の対向面積が極めて小
さいもので−あり、上記と同様に大きい駆動トルクが得
られない原因の14となっている。
(Problem to be solved by the invention) Since the outer peripheral surface of the stator is uniform, the magnetic pole part of the stator facing the rotor does not stand out from other magnetic pole parts, so a large driving torque cannot be obtained. There is. In addition, in a stator made of round bar material, its cross-sectional shape is close to a perfect circle, so the opposing area of the magnetic pole part facing the rotor is extremely small. It is 14.

そこで本発明の目的は、駆動トルクを大きくし、材料コ
スト,加工コストの低減を達成することにある。
Therefore, an object of the present invention is to increase the driving torque and reduce material costs and processing costs.

(問題点を解決するための手段) 本発明の特・徴は、コ字状のステータを丸棒材で形成し
、ロータと対向するステータ磁極に相当する部分には、
プレスにより押し出されて内方へ突出する磁極が形成さ
れているところにある。
(Means for Solving the Problems) The characteristics of the present invention are that the U-shaped stator is formed of a round bar material, and the portion corresponding to the stator magnetic poles facing the rotor is
This is where the magnetic poles are extruded by a press and protrude inward.

(作用) 丸棒材で形成されたステータの磁極部にプレスにより押
し出されて内方へ突出する磁極を設けたことにより、磁
極がロータに際立って接近し、このためにロータは無通
電時にステータ磁極から静的磁気吸引力を際立って多く
受けて安定的に静止する。通電時にはステータ磁極ロー
タに対して大きな磁気力が作用してロータは大トルクで
回転する。
(Function) By providing the magnetic poles of the stator, which is made of a round bar material, with magnetic poles that are pushed out by a press and protrude inward, the magnetic poles come very close to the rotor, which causes the rotor to move closer to the stator when no current is applied. It receives a significant amount of static magnetic attraction from the magnetic poles and stands still stably. When energized, a large magnetic force acts on the stator magnetic pole rotor, causing the rotor to rotate with large torque.

(実施例) 以下、図面に基いて本発明の一実施例について説明する
(Example) Hereinafter, an example of the present invention will be described based on the drawings.

第1図示のようにステータ1は、パーマロイ,硅素鋼な
どの高透磁率材料からなる丸棒材で作られたものである
。全体形状はほぼコ字状に屈曲形成されており、2つの
脚片11,12とこれらを連結する連結部13とを具備
している。脚片11はストレートな棒状をなしており、
合成樹脂製のボビン2を介してコイル3が巻装してある
。脚片12の先端部には、くの字状の屈曲部12aを形
成してある。脚片11の先端部11aと他方の脚片12
の先端部12aに囲まれた空間内に、N,S2極に着磁
されたロータ4が配設されている。
As shown in the first diagram, the stator 1 is made of a round bar made of a high magnetic permeability material such as permalloy or silicon steel. The overall shape is bent into a substantially U-shape, and includes two leg pieces 11 and 12 and a connecting portion 13 that connects them. The leg piece 11 has a straight rod shape,
A coil 3 is wound around a bobbin 2 made of synthetic resin. A dogleg-shaped bent part 12a is formed at the tip of the leg piece 12. The tip 11a of the leg piece 11 and the other leg piece 12
A rotor 4 magnetized to two N and S poles is disposed in a space surrounded by the tip 12a.

脚片12の先端部12aには、ロータ4に近接して対向
し、ステータ磁極に相当する部分に、内方(ロータ方向
)へ突出する磁極12b,12Cがプレスによる押し出
しによって形成してある。磁極12bとロータ4との間
隙は、磁極12cと口−タ4との間隙よりも小さく設定
してあり、磁極12bが主極,磁極12cが補極として
作用する。
Magnetic poles 12b and 12C protruding inwardly (in the rotor direction) are formed on the tip end 12a of the leg piece 12 by extrusion using a press at a portion that faces the rotor 4 in close proximity and corresponds to the stator magnetic poles. The gap between the magnetic pole 12b and the rotor 4 is set smaller than the gap between the magnetic pole 12c and the rotor 4, and the magnetic pole 12b acts as a main pole and the magnetic pole 12c acts as a commutating pole.

両磁極12b,12cはいずれも第2図示のようにその
端面が、ロータ4の外周面と平行になるように形成して
ある。ロータ4に対向する磁極12b,12cの対向面
積が大きくなりロータ4に対する無通電時の磁気的拘束
力および通電時の駆動力が高められる。
Both magnetic poles 12b and 12c are formed such that their end faces are parallel to the outer peripheral surface of the rotor 4, as shown in the second figure. The opposing area of the magnetic poles 12b and 12c facing the rotor 4 is increased, and the magnetic restraining force on the rotor 4 when not energized and the driving force when energized are increased.

第3図は、ステータの他方の脚片22の先端部22aに
設けた磁極22b,22cを平面矩形形状に構成したも
ので、ロータ4と対向している磁極2 2 b,  2
 2 cの端面の幅が第1図示の例よりもやや広くして
ある。また端面を平面凹円弧状としてロータ4の外周面
と平行にしてもよい。いずれの場合にもその断面形状は
、第2図示のものと同様に形成されるので、ロータ4と
の対向面積が大きくなり、したがって無通電時磁気的拘
束力および通電時の駆動力が共に大きなものとなる。
FIG. 3 shows magnetic poles 22b, 22c provided at the tip 22a of the other leg 22 of the stator having a rectangular planar shape, with the magnetic poles 22b, 22 facing the rotor 4.
The width of the end face of 2c is slightly wider than that of the example shown in the first figure. Alternatively, the end surface may be formed into a concave arc shape in a plane parallel to the outer circumferential surface of the rotor 4. In either case, the cross-sectional shape is similar to that shown in the second figure, so the area facing the rotor 4 is large, and therefore both the magnetic restraining force when not energized and the driving force when energized are large. Become something.

(発明の効果) 本発明は以上の構成であり、ステータを丸棒材で形成し
ているので、材料に無駄が出す、製造コストの低減に極
めて有効である。磁極をプレスにより押し出して内方へ
突出させてロータと対向させているので、無通電時にロ
ータに対する十分な磁気的拘束力が得られ、かつ通電時
にロータに対する大きい駆動力が得られる。また磁極の
端面をロータの外周面と平行を成すようにすることによ
り、ロータとの対向面積が大きくなり、駆動効率が一層
向上する。
(Effects of the Invention) The present invention has the above configuration, and since the stator is formed of a round bar material, it is extremely effective in reducing wasted materials and manufacturing costs. Since the magnetic poles are pressed out by pressing and protruded inward to face the rotor, a sufficient magnetic restraining force can be obtained for the rotor when no current is applied, and a large driving force for the rotor can be obtained when energized. Furthermore, by making the end faces of the magnetic poles parallel to the outer circumferential surface of the rotor, the area facing the rotor is increased, and driving efficiency is further improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の一部断面平面図、第2図は
第1図■一■線拡大断面図、第3図は他の実施例のステ
ータの要部平面図である。 1・・・ステータ、 11,12.22・・・脚片、 12b,12c,22b,22c・・・磁極、3・・e
コイル、    4−−−ロータ。 以  上 (  他  1  名  )
FIG. 1 is a partially sectional plan view of one embodiment of the present invention, FIG. 2 is an enlarged sectional view taken along line 1-1 in FIG. 1... Stator, 11, 12.22... Leg piece, 12b, 12c, 22b, 22c... Magnetic pole, 3...e
Coil, 4--rotor. That's all (1 other person)

Claims (1)

【特許請求の範囲】 1、コ字状のステータと、このステータの両脚片間に配
設したロータと、上記ステータの一方の脚片に巻装した
コイルとからなり、 上記ステータは、丸棒材で作られており、上記ロータと
対向するステータ磁極に相当する部分には、プレスによ
り押し出されて内方へ突出する磁極を形成してある ことを特徴とする時計用同期モータ。 2、特許請求の範囲第1項において、内方へ突出する磁
極の端面は、ロータの外周面と平行をなしていることを
特徴とする時計用同期モータ。
[Claims] 1. Consists of a U-shaped stator, a rotor disposed between both legs of the stator, and a coil wound around one leg of the stator, and the stator is a round bar. 1. A synchronous motor for a timepiece, characterized in that the motor is made of material and has magnetic poles that are pushed out by a press and protrude inwardly formed in portions corresponding to stator magnetic poles facing the rotor. 2. A synchronous motor for a timepiece according to claim 1, wherein the end face of the inwardly protruding magnetic pole is parallel to the outer peripheral surface of the rotor.
JP14365986A 1986-06-19 1986-06-19 Synchronous motor timepiece Pending JPS631356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14365986A JPS631356A (en) 1986-06-19 1986-06-19 Synchronous motor timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14365986A JPS631356A (en) 1986-06-19 1986-06-19 Synchronous motor timepiece

Publications (1)

Publication Number Publication Date
JPS631356A true JPS631356A (en) 1988-01-06

Family

ID=15343938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14365986A Pending JPS631356A (en) 1986-06-19 1986-06-19 Synchronous motor timepiece

Country Status (1)

Country Link
JP (1) JPS631356A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH068253U (en) * 1992-02-13 1994-02-01 株式会社宇治門田園 Tea leaf quantitative dispensing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH068253U (en) * 1992-02-13 1994-02-01 株式会社宇治門田園 Tea leaf quantitative dispensing device

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